Davis Unified Ignition (DUI) install In An AMC 304 Four Wheeler's Verne Simons installs a ignition system known as HEI or high energy ignition by Davis Unified Ignition in an AMC 304.
Properly firing your engine's ignition is a necessity for good combustion-thus power. There are many aftermarket ignition choices for the RB Wedge and Hemi that offer added voltage to the spark plugs.
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